I've had several people tell me that my valve (s) could be burned if I have a lot of misfiring in two of my cylinders. I can not drive me car because the misfiring is so excessive and the check engine light keeps flashing. I also had a mechanic tell me to change my spark plugs to see if that would render some result. This all occured from having some jokers cross over ignition wires. PLEASE HELP! I don't want to have to shove out a bunch of money to get my car fixed.